Consider the following reactionMnO2 + KOH + O2 → A + H2O.Product 'A' in neutral or acidic medium disproportionate to give products 'B' and 'C' along with water.The sum of spin-only magnetic moment values of B and C is _______ BM. (nearest integer) Given atomic number of Mn is 25)

Engineering

Chemistry

Dichromate and Permanganate Ion Reactions

Question

Consider the following reaction
MnO₂ + KOH + O₂ → A + H₂O.
Product 'A' in neutral or acidic medium disproportionate to give products 'B' and 'C' along with water.
The sum of spin-only magnetic moment values of B and C is _______ BM. (nearest integer) Given atomic number of Mn is 25)

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MnO₂ + KOH + O₂ → K₂MnO₄ + H₂O

(A)

MnP₄^2– + 4H⁺ → MnO₄ + MnO₂ + H₂O

(B) (C)

Species	Number of paired e–
(B) MnO^–₄	0
(C) MnO₂	3

Spin only Magnetic moment $= \sqrt{n (n + 2)} BM$

$= \sqrt{15} BM$

Ans. 4